Multiple Appearance Directory Number (MADN)

Last Updated : May 23, 2019 |
Prolog information
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Keywords:
  • CS 1000 endpoint user experience
    A Multiple Appearance Directory Number is a DN number that rings on two or more endpoints. A MADN is created when a number must ring on more than one endpoint.
  • Communication Manager endpoint user experience
    Communication Manager implements Single Call Arrangement (SCA) through “regular” bridged appearances.
    The 1210 UNIStim phones cannot bridge a call. Hence, Avaya recommends that you do not configure SCA on 1210 UNIStim phones. If SCA is configured on a 1210 UNIStim phone and if the SCA number is active, the user cannot use any other appearances on the 1210 phone to place a call or join another call. This limitation of the 1210 UNIStim phone is the same in both CS 1000 and Communication Manager.
    Multiple Call Arrangement (MCA) is implemented through “MCA” bridged appearances - brdg-appr with "a" parameter.
  • Device Adapter endpoint user experience
    Device Adapter uses the Communication Manager implementation of SCA and MCA to replicate MADN.
    When an analog set migrates to Device Adapter, the station may be SCA or MCA. This can be determined from MCRD (MCA denied, which means the station is SCA) or MCRA (MCA Allowed).
    This determines whether the migration tool maps the station DN to a traditional call appearance, a traditional bridged appearance if the extension is shared, or whether it is using the brdg-appr a (bridged appearance, any). After determining the correct type of line appearance, the class of service value is discarded during the migration.
    There is a limitation for specific digital sets. Specific keys may be unable to process features outside a specific list of permissible features. For example, 3902 has three programmable soft keys, but the fourth feature key can only be conference or transfer.
    CS 1000 rejects allocation of unsupported services on a key during administration. Device Adapter is separated from the configuration. To ensure that only valid requests are made to Communication Manager, any button feature allocation that is not allowed on a specific key is ignored.
    Note:
    The Multiple Appearance DN capability requires Session Manager to be configured to support Multiple Device Access in a very specific manner.
    • The maximum number of devices that can log in as this user must be limited to one.
    • A new login attempt must be able to over-ride an existing logged in registration.
    This allows an endpoint registered to Device Adapter that reboots or loses network connectivity to Device Adapter to register at any Avaya Breeze® platform in the Device Adapter cluster, or in a server 1/server 2 case, to register with the backup cluster. Otherwise, the new registration would potentially be blocked.
    For more information about Multiple Appearance DN handling on Device Adapter, see Multiple Appearance Directory Number (MADN) in Appendix H: Call processing features and services.